Plug structure for jordan engines



July 16, 1935.

C. C. RIEHM PLUG STRUCTURE FOR JORDAN ENGINES Fil ed Jan; 7, 1935 4 Shets-Sheet 1 July 16, 1935. c. c. RIEHM PLUG STRUCTURE FOR JORDAN ENGINES Filed Jan. 7; 1935 4 vSheets-Sheet 2 Christian a .ifiielzm July 16, 19350 c. c. RlEHM I PLUG STRUCTURE FOR JORDAN ENGINES Filed Jan. '7, 1935 4 Sheets-Sheet 3 c. c. RlEHM PLUG STRUCTURE FOR JORDAN ENGINES July 16, 1935.

Filed Jan. 7, 1935 4 Sheets-Sheet '4 Patented July 16, 1935 A NITED STATE A NT OFFICE 2,008,; I.

Christian 0. Riehm, Methuen, Mass.

Reflled for abandoned application Serial No.

616,544, June 19, 1932. This application Januan 7, 1935, Serial No. 779.

23 Claims. (Cl. 92-27) The present invention relates to fillers forJordan plugs used in pulp Jordan engines described in applicant's abandoned application filed June 10, 1932, Serial No. 616,545. More particularly it relates to the construction of a demountable filler, of knife and spacer bars for such plugs.

It has formerly been the practice to mount the knife bars in slots cut directly in the body of a Jordan plug. During use of such a plug, the edges of the slots were often broken due to strains or shocks upon the knife bars, and the breaking out of these slots necessitated the discarding of the entire plug, and the expense of procuring a new one, and also involved a period of idleness for the-Jordan engine while a new plug was being obtained.

Demountable fillers of various constructions have been proposed heretofore, but their use was attended by certain disadvantages. One type of filler had to be assembled upon the plug itself and this required the presence of a skilled mechanic at .the paper mill, and necessitated the idleness of the Jordan engine during the period required in assembling the filler. Another disadvantage of such fillers was that upon the breaking of any of the parts thereof, the Jordan engine had to remain idle while the filler, or at least a section thereof, was taken down, the broken part replaced, and the filler or section reassembled upon the Jordan plug.

One object of the present invention is to provide a demountable filler for a Jordan plug, which may be entirely constructed at a machine shop or other place, and shipped to the place at which it is to be used, where it may be quickly mounted upon the plug of a Jordan engine by an unskilled workman.

Another object of the invention is to provide such a filler which is built in sections of such relative size and shape that one section may be nested within the other for storage or shipment, thus effecting a great saving in space and affording greater ease in handling.

Another object is to provide such a filler, a

' section of which may be easily and quickly removed from the Jordan plug after a knife bar or other part has broken, and shipped to a shop for repair, and which may be immediately replaced with a duplicate section kept on hand, thus keeping the Jordan engine in operation while the filler section is being repaired, and avoiding the necessity of the presence 'of a skilled mechanic at the Jordan mill.

Still another object is to provide such a filler which may be used with any Jordan plug already in use with only slight changes in the plug body being necessary.

Another object of the invention is to provide a plug structure which will be equivalent in strength to an all steel plug at an expense much less than that of such a plug.

In the accompanying drawings:

Figure 1 is a plan view of a filler assembled and mounted upon a Jordan plug, a'portion of the plug and filler being shown in section.

Figure 2 is a sectional view taken on lines 2-4 of Figure l.

Figure 3 is a sectional view taken on lines 3-4 of Figure 2.

Figure 4 is an enlarged sectional view of a portion of the plug and of the filler assembly.

Figure 5 is an edge plan view of one of the hoop members.

Figure 6 is a sectional view of the hoop memberof Figure 5.

Figure 7 is a plan view of the assembled larger section of the filler.

Figure 8 is a similar view of the smaller sec tion, Figures 7 and 8 together indicating the manner by which the two sections may be nested.

Figure 9 is a plan view of" the end retaining. plate for the large end of the Jordan plug.

Figure 10 is a similar view of theretaining plate for the small end of the Jordan plug.

Figure 11 is a plan view from the outer edge of one of the keys.

Figure 12 is an end view of one of the keys.

Figure 13 is a perspective view of one of the knife bars.

Figure 14 is a perspective view of one of the wooden spacer bars.

Figure 15 is a perspective view of one of the key supported knife bars.

Figure 16 is a perspective view of another of the key supported knife bars.

Figure 17 is a longitudinal sectional view show ing the two filler sections nested together.

In the accompanying drawings, the numeral i indicates a hollow tapered Jordan plug of any desirable size, having a smooth conical outer surface 2, an end wall-'la at the larger end thereof, and an inwardly'extending' rim lb at the smaller end thereof. In the surface 2 of the beating plug are cut shallow longitudinal keyways 3. Holes 4 are drilled in the plug body I in the bottoms of the keyways, equidistant from the sides thereof, and longitudinally spaced as shown in Figure 1. The holes 4 are tapped to receive machine screws.

The filler for the Jordan plug is composed of two sections, each being conical in shape, and of I proper size and taper to be fitted upon the larger and smaller halves of the plug bodyi respectively. The taper of the plug body I and consequently that of the filler sections is such that when the filler is not mounted upon the plug,

the smaller section may be nested within the larger by slidingly inserting the smaller end of the former into the larger end of the latter,

as indicated in Figures 7 and 8.

The construction of each filler section is as follows:.

Longitudinal keys. 5 are provided, the said keys being equal in length to the filler section,

and having bases of the proper width to be received in the keyways 3. Each keyway has in the center of the outer portion a longitudinal channel 6 extending the full length of the key, except where the walls 8 are cut away, as will later appear. Spaced transverse holes I, as shown in Figure 11, are located in the walls 8 of the channel 6. In the center of the key 5 is a transverse recess 9 equal in depth to the channel 6, and at the ends of the key are reduced flat portions II) and Illa formed by cutting away the walls 8 to a depth equal to that of the channel 6. The portions III and Ina and that portion of the keys underlying the recess 9 are of sufilcient thickness to project above the surface of the Jordan plug when the key 5 is positioned in one of the keyways 3. In the flat portions I0, Illa and in the portion underlying the recess 9 are located clearance holes II properly positioned to register with the tapped holes 4 in the bottoms of the keyways 3.

Upon the keys 5 are mounted circular hoops I2, I3 and I4 which are of respective diameters to be seated upon the flat portion Illa, the transverse bottoms of the transverse recesses 9 and the flat portions III of the keys 5. The larger two hoops I3 and I4 are secured to the keys 5 by welding, riveting or any other suitable means. The smallest hoop I2 is put into position after the remainder of the filler section has been assembled as will be more fully explained. The hoops I2, I3 and I4 may be formed of steel and are preferably hardened by heat treatment to prevent wearing and to strengthen them against breakage.

Each hoop is provided with a plurality of spaced recesses I5 cut in one side of the rim thereof, and adapted to engage the sides of the knife bars. The recesses of the two end hoops I2 and I4 of each filler section are located on the sides of the. hoops toward .the longitudinal center of the filler, and those of the center hoop I3 are on the side toward the smaller end of the filler, that is to say, on the same side as those of the largest hoop I4. Clearance holes IIa are located in the rims of the hoops at 90 degree in tervals. The hoops I2, I3 and It are so positioned upon the keys 5 that the holes IIa register with the holes II in the keys. The keys' 5 and the hoops [3, I6 form the skeleton of the filler section.

A plurality of knife bars I6 are mounted upon the skeleton in the following manner. Each knife bar has recesses I1 and Ila at the ends thereof, and a central L-shaped recess I8. These recesses are of suitable size and shape to receive the hoops, I4, I2 and I3, respectively when the knife bars are engaged therewith. Under each of therecesses I1 and I8 is a projection or ear I9, and a similar ear Isa is located beneath the recess I'Ia, all being equal in thickness to the distance between the inner surfaces of the rims of the hoops and the surface 2 of the Jordan plug. A knife bar is mounted upon the filler section skeleton by inserting the ears I9 under the hoops I3 and I4, which are received in the recesses l8 and I1 respectively. Thisiis accomplished by placing the knife bar in its proper lateral position adjacent one of the recesses I5 of each hoop, and then sliding the knife bar to the right.

Portions of the knife bar are thereupon received in the recess I5, and the ears I9 engage beneath the hoops I3 and I4. The sides of the recesses I5 bear agalnstthe sides of the knife bar I6 and hold it against lateral motion, and the ears I9 hold the knife bar against the plug body I. It will be apparent that due to the position of the recesses I I and I8 the inner edges of the knife bars I6 rest against the surface 2 of the Jordan plug, the ears I9 being of proper width to bear against both the surface 2 and the inner sides of the hoops under which they are engaged.

Two knife bars designated 20 and 2 are mounted upon each of the keys 5. These bars are of proper width to closely fit within the longitudinal channels 6 of the keys 5, and are of the same length as the portions of the walls 3 on either side of the transverse recess 9. It will be apparent that the ends of these knife bars 20 and 2I will abut against the hoops I2 and I3, or I3 and I4, mounted upon the keys. The knife bars are of such height that when mounted their outer edges will be even with an imaginary circle described by the outer edges of the knife bars I6. In each of the knife bars 20 and 2I are holes 22 spaced to register with the holes I in the channel walls 3. After the knife bars 20 and 2I are positioned with their inner portions in the channel 6, taper pins 23 are driven through the holes 'I and 22 to secure the knife bars in position. It will be noted that the smaller section has a larger number (preferably double the number) of knife bars than has the larger section.

As shown in Figure 4 wooden spacer bars 24 are wedged between the knife bars I6, and the wooden spacer bars 24a are wedged between the keys 5 and the adjacent knife bars I6. The spacer bars 24 and 24a are equal in length to the knife bars I6 and are of sufficient width to be tightly wedged in position. In the inner portions of the spacer bars are located recesses 25 designed to receive the hoops I2, I3 and I4. The recesses 25 are of a proper depth to allow the inner surface of the spacer bar 24 to lie against the surface 2 of the Jordan plug. The spacer bars 24 are inserted in the filler section by drivingthem directly toward the center of the filler.

After the spacer bars 24 have been inserted, the hoop I2, which is the smallest hoop, is driven into place on the smaller end of the filler section. As it moves longitudinally inwardly, each of the recesses I5 receives a portion of one of the knife bars I6, and. the hoop I2 enters the recess Ila and overlies the ear I9 of the knife bar.

It will be noted that the inner surface of each filler section is a smooth cone formed by the inner surfaces of the knife bars i6 and the spacer bars 24 and 28a, except for the bases of the key 5 which slightly project therefrom. The filler sections are mounted upon a Jordan plug, such as I, from the smaller end of the plug. The protruding bases of the keys 5 engage in the keyways 3 of the plug body I, and the inner conelike surface of the filler comes into contact with the surface 2 at all points. The filler sections are secured in position upon the plug body I by ma,- chine screws 26 passing through the holes Ila and II in the hoops and keys respectively and screwed into the tapped holes 4.

A removable retaining plate 28 is mounted upon the larger end of'the plug body I. This plate is composed of a ring-like portion 29 equal in diameter to the end wall Ia of the plug body I, and having a central aperture 30 of suitable diameter to receive the hub portion of the wall la, and an annular offset flange 3|, the diameter of which is equal to that of the hoop I 4 of the larger filler section. In the ring portion 23 of the end plate is a series of clearance holes 32. The plate 28 is secured to the plug body I by machine screws 33 which pass through the holes 32 and are screwed into threaded holes 34 in the end wall Ia.

A somewhat similar end plate 35 is removably secured to the small end of the plug body I by machine screws 36. The plate 35 is advantageously in the form of an annular ring, its diameter being equal to that of the hoop I! of the smaller filler section. The screws 36 pass through clearance holes 31 in the plate 35 and are screwed into threaded holes 38 in the rim portion lb of the plug body I.

The plate-28 serves as a stop for the larger filler section and the flange portion 3| serves to protect the end of the said filler section when it is mounted upon. the plug body I. serves to prevent the filler from working loose by sliding toward the smaller end of the plug body I, and also acts-to protect the adjacent end of the smaller filler section.

The filler sections may advantageously be as-v sembled at a machine shop or other place of manufacture by assembling them upon a dummy plug externally similar in every way to the plug body on which the filler in question is to be used. It will be apparent that a standard taper of Jordan plugs for anyparticular type of Jordan engine may be established, and that this will simplify and cheapen the production of the fillers by permitting all those to be usedbn a certain type or make of engine to be built of identical parts and assembled on the same dummy plug. 'This would also provide a stand ard filler which could be used with any machine of the particular type with which the filler was built to be used. Any tapered Jordan plug body may be prepared for use with this improved filler by simply turning down the surface to the standard taper, cutting the necessary keyways therein, and drilling and tapping the holes necessary for the reception of the fastening screws. Thus the use of this invention does not require the discarding of plugs already in use and-the purchase of new ones, but merely some relatively small changes, such as can be made in any machine shop.

The filler sections are composed of inexpensive parts and are easily assembled. Thus an inexpensive and simple, yet strong and rugged article is produced. The construction is such that any broken or worn part may be replaced at small expense and easily installed in the assembly. The cost of an entire filler is so comparatively small that one or more spare sections may be kept at the Jordan mill, for use while others are being repaired, thus insuring substantially continuous operation of the Jordan engines. The plug body of the Jordan engine is entirely covered by the filler and is not subjected to injury, being protected *against all strain and shock thereby.

Due to the fact that the hoops, in which the knife bar supportingslots are located, are made of steel and heat treated, the Jordan plug filler herein disclosed is equivalent to an all-steel plug. Thus an assembly having the strength and other advantages of an all-steel plug is provided at a cost much less than that of such a plug constructed entirely of steel.

It has been pointed out that when the filler is The plateili,

them out longitudinally as has heretofore been necessary.

From the foregoing, it is thought that the construction, operation and many advantages of the herein described invention will be apparent to those skilled in the art without further description, and it will be understood that various changes in the size, shape, proportion and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

What I claim, is:

1. In a demountable. filler for Jordan plugs,-

the combination of a key for detachably interlocking with a plug body, a hoop supported on the key, and a plurality of knife bars engaged with the hoop. 2. The combination with a Jordan plug, of a longitudinal key detachably secured to the Jordan plug, a hoop supported by the key and encircling the Jordan plug, and a plurality of knife bars engaging the hoop and held in position thereby.

3. The combination with a Jordan plug, of a plurality of longitudinal keys detachably secured to the Jordan plug, a plurality of hoops encircling the Jordan plug and spaced from the surface thereof by the keys, and a plurality of knife bars having ears engaging beneath the 'hoops, said knife bars having recesses to receive the hoops.

4. The combination with a Jordan plug, of a plurality of longitudinal keys adapted to be detachably secured to the Jordan plug, a plurality of hoops spaced from the surface of the Jordan plug and supported by the keys, and a plurality of knife bars held against the surface of the Jordan plug by the hoops.

5. In a filler for Jordan plugs, a longitudinal key having a continuous longitudinal knife-bar receiving channel in the outer portion thereof, and longitudinally spaced clearance holes for the reception of means for fastening the key to a Jordan plug.

6. In a filler for Jordan plugs, a key having a continuous longitudinal knife-bar receiving channel in the outer portion thereof, spaced transverse recesses through the outer portion thereof and clearance holes in the inner portion of the key, said clearance holes being positioned in the transverse recesses.

7. In combination, a longitudinal key for securing a filler to a Jordan plug having a longitudinal channel in the outer portion thereof, and a knife bar positioned and secured within the channel and extending above the outer edge of the key.

8. In a filler for Jordan plugs, a longitudinal key adapted to be detachably secured to a Jordan plug and having a transverse hoop-receiving recess in the outer portion thereof, the recess being of such depth that the bottom thereof is outcal wardly spaced from the surface of the Jordan plug when the key is mounted thereon.

9. In a filler for Jordan plugs, the combination of a longitudinal key adapted to be removably secured to a Jordan plug, and a hoop secured to the key and spaced from the surface of a Jordan plug when the filler is mounted thereon.

10. In a filler for Jordan plugs, a plurality of hoops spaced from the surface of the Jordan plug and supported by longitudinal keys, adapted to be detachably secured to the plug body, and a plurality of knife bars engaging the hoops and having their inner edges in contact with the surface of, the Jordan plug. a

11. In a filler for Jordan plugs, a plurality'of hoops spaced from the surface of the Jordan plug, and supported by longitudinal keys, adapted to be detachably secured to the plug body, a plurality of knife bars engaging and held in position by the hoops, and spacer elements positioned between the knife bars and in contact with the surface of the Jordan plug.

12. A filler for Jordan plugs comprising a plurality of longitudinally disposed keys adapted to be received in keyways in the surface of the Jordan plug, a hoop supported on the keys, and a plurality of knife bars engaged by the hoop.

13. A filler for tapered Jordan plugs comprising a relatively large section and a smaller section adapted to be inserted within the larger section when not mounted upon theJordan plug, each section comprising a plurality of longitudinal keys adapted to be received in keyways in the surface of the Jordan plug, spaced hoops supported by the keys, and a plurality of knife bars having lugs adapted to engage underthe hoops.

14. A filler for Jordan plugs comprising a plurality of longitudinal keys adapted to be received in keyways in the surface of a Jordan plug, a

hoopspaced from the surface of the plug by the keys when the filler is mounted thereon and supported by the keys, a plurality of knife bars having recesses to receive the hoop and lugs'to' engage beneath the hoop, and a plurality of spacer bars adapted to be positioned between the knife bars, said spacer bars having recesses to receive the hoop, 'and said knife bars and spacer bars'being incontact along their inner faces with the surface of the Jordan plug when the filler is mounted thereon.

15. A filler for Jordanplugs comprising a. plurality of longitudinal keys adapted to be received in keyways in the surface of the Jordan plug, a hoop having spaced recesses in one side, said hoop being supported by the keys, a plurality of longitudinal knife bars having portions adapted to be received in the recesses, and spacer elements adapted to be positioned between the knife bars. I

16. A demountable filler for a :Tordan plug comprising a demountable skeleton frame consisting of a pluraltiy of keysadapted to be received in keywaysin the surface of the Jordan plug, spaced hoops, each having spaced recesses in one side, the hoops being supported by the keys and spaced from the surface of the Jordan plugwhen mounted thereon, and a plurality of knife bars having cut-away portions adapted to receive the hoops and having lugs adapted to engage beneath the hoops, said knife bars being adapted .on, and a plurality of knife...bars, adapted.

gage the hoop and to be heId'in- -positiQI-itherebyQ to be held in position by engaging the sides of the recesses in the hoops.

1'7. A demountable filler for Jordan plugs comprising a plurality of knife bars, a hoop having means for engaging the knife bars against relative movement, and a plurality of keysadapted to support the hoops and adapted to be received in keyways in the surface of a Jordan plug.

18. A filler for Jordan plugs, comprising a 1011- gitudinal key adapted to be received in a keywayin the surface of a Jordan plug, a hoop adapted to encircle a Jordan plug when the filler is' mounted thereon and supported bythe key, a plurality of knife bars adapted to engage the hoop, and means forremovably securing the key to a Jordan plug.

19. A filler for Jordan plugs comprising 8. Iongitudinally channeled key adapted to be received in a keyway in the surface of a Jordan plug,

knifebars positioned in said channel, a hoop supported by the key, and a plurality of longitudinal knife bars engaging andheld in position by the hoop.

20. A filler for Jordan plugs,-;=comprising a key adapted to be received ina way in the surface of a Jor; a' transverse recess there through the said recess and a, Jordan plug when the fill 21. A filler for Jordan plugs comprising gitudinal key adapted to be received.

way in the surface of a Jordan plug sadde key." having a longitudinal channel,randa"transvraefl he transverse-'- recess, a hoop passing through recess and supported by'tlie'keyia'iplurf knife bars engaging thehoop,-- andsecured within the longitudinal channelibf-flthe' key. i 22. A filler for Jordan plugs, comprising a plu-' rality of longitudinally channeled keys adapted to be received in keyways in the surface of a Jordan plug, each of said keys having acentral transverse recess and a transverserecess at the end thereof, a

plurality of hoops of different diameters positioned respectively in the transverse recesses and spaced from the surface of a Jordan plug when mounted thereon by the keys, a plurality of knife bars having recesses adapted to receive the hoops and lugs adapted to engage beneath the hoops, spacer bars having recesses. to receive the hoops and adapted to be inserted between the knife bars, a knife bar secured on either side of the transverse channels and secured in the longitudinal channels of the keys, and means for securing the keys to a Jordan plug, said means passing through the hoops and keys at their pointsv of intersection and lying-below the top edge of the keys within the transverse channels. 23- The combination in a filler for Jordan plugs of a plurality of hoops spaced from the surface 'of the Jordan plug and supported by longitudinal keys detachably secured to the plug body, a

plurality of knife bars engaging and positioned by the hoops, spacer elements positioned between the knife bars and in contact with the surface of the Jordan plug, and a plate removably-mounted upon each endof the plug body in contact with the ends of the knife bars and spacer element.

CHRISTIAN C. RIEHM; 

